Celebrities React to Boston Marathon Bombing on Twitter

All chatter (even of the pop-culture variety) has ground to a halt with the news of two explosives being detonated at the finish line of the Boston Marathon today. As news continues to pour in and we remain glued to TV and Twitter for news, so do the stars, who are just as shocked and horrified as the rest of us.

There was an explosion by the finish line about 5 minutes after I finished- I'm ok but I'm sure there are many hurt.